Kilojoule to Electronvolt Converter
Energy · unit-converter
Convert Kilojoule to Electronvolt with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Kilojoule (kj)
To: Electronvolt (ev)
About Kilojoule
One kilojoule is 1,000 J. Scientific and engineering contexts often use kJ alongside joules.
About Electronvolt
The electronvolt is the energy change of one elementary charge across 1 V: 1 eV ≈ 1.602176634×10⁻¹⁹ J (exact by SI definition). Used in particle physics and chemistry.
How to convert kilojoules to electronvolts
1 kilojoule is equal to 6.24150907e+21 electronvolt when both are expressed in joule-equivalents:
1 kj = (1,000 J ÷ 1.602176634e-19 J) ev = 6.24150907e+21 ev
Each kilojoule is defined as 1,000 J and each electronvolt as 1.602176634e-19 J in this tool, so one kj equals 1,000 ÷ 1.602176634e-19 ev = 6.24150907e+21 ev.
Let d(kj) be the numeric amount in Kilojoule (kj), and d(ev) the amount in Electronvolt (ev). Then:
d(ev) = d(kj) × (1,000 / 1.602176634e-19)
Equivalently, divide by how many kj fit into one ev (joules per ev divided by joules per kj):
d(ev) = d(kj) ÷ 1.60217663e-22
Or: electronvolt = kilojoule ÷ 1.60217663e-22
Examples
Example #1: Convert 1 kj to electronvolt
1 kj = 1 kj × (1,000/1.602176634e-19) ev = 6.24150907446e+21 ev
1 kj = 1 kj ÷ 1.60217663e-22 = 6.24150907446e+21 ev
Example #2: Convert 10 kj to electronvolt
10 kj = 10 kj × (1,000/1.602176634e-19) ev = 6.24150907446e+22 ev
10 kj = 10 kj ÷ 1.60217663e-22 = 6.24150907446e+22 ev
Summary
To convert Kilojoule to Electronvolt, multiply the value in kj by the ratio of joules per kj divided by joules per ev. Equivalently: value_ev = value_kj × (1000 / 1.602176634e-19). Numerically, 1 kj equals 6.241509074460763e+21 ev.
Relationship context
You are converting between SI energy (joules) (Kilojoules) and atomic-scale energy (electronvolts) (Electronvolts). All values are mapped through joules first. The numeric factor is 6.241509e+21.
Conversion tables
| Kilojoule (kj) | Electronvolt (ev) |
|---|---|
| 0.1 | 624,150,907,445,999,960,064 |
| 1 | 6.24150907446e+21 |
| 2 | 1.24830181489e+22 |
| 3 | 1.87245272234e+22 |
| 4 | 2.49660362978e+22 |
| 5 | 3.12075453723e+22 |
| 6 | 3.74490544468e+22 |
| 7 | 4.36905635212e+22 |
| 8 | 4.99320725957e+22 |
| 9 | 5.61735816701e+22 |
| Kilojoule (kj) | Electronvolt (ev) |
|---|---|
| 10 | 6.24150907446e+22 |
| 20 | 1.24830181489e+23 |
| 30 | 1.87245272234e+23 |
| 40 | 2.49660362978e+23 |
| 50 | 3.12075453723e+23 |
| 60 | 3.74490544468e+23 |
| 70 | 4.36905635212e+23 |
| 80 | 4.99320725957e+23 |
| 90 | 5.61735816701e+23 |
| 100 | 6.24150907446e+23 |